Is containerworks.jp Safe for Email?

[ jprs database provides information on network administration. its use is    ]
[ restricted to network administration purposes. for further information,     ]
[ use 'whois -h whois.jprs.jp help'. to suppress japanese output, add'/e'     ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'.                 ]
domain information: [ドメイン情報]
[domain name]                   containerworks.jp

[登録者名]                      （登録者からの申請により非表示）
                                詳細は→https://jprs.jp/about/dom-rule/whois-concealment/
[registrant]                    (not displayed by registrant's request)
                                for details -> https://jprs.jp/about/dom-rule/whois-concealment/ (only in japanese)

[name server]                   ns1.xserver.jp
[name server]                   ns2.xserver.jp
[signing key]                   

[登録年月日]                    2020/01/27
[有効期限]                      2025/01/31
[状態]                          active
[最終更新]                      2024/02/01 01:05:03 (jst)

contact information: [公開連絡窓口]
[名前]                          whois情報公開代行サービス by お名前.com
[name]                          whois privacy protection service by onamae.com
[email]                         [email protected]
[web page]                       
[郵便番号]                      150-8512
[住所]                          東京都渋谷区
                                桜丘町 26-1
                                セルリアンタワー 11階
[postal address]                shibuya-ku
                                26-1 sakuragaoka-cho
                                cerulean tower 11f
[電話番号]                      +81.354562560
[fax番号]